![]() ![]() Our goal now is to get the Angular application running in a Docker container. To make sure everything is working, open terminal inside the client directory and run: npm start Npm i -g then generate a new Angular app with: ng new client This will create a new Angular app in a folder called client, containing a simple “hello world” Angular app. Luckily, Angular cli makes it easy to scaffold a new Angular app, so we will first make sure we have that installed: We will start by creating the Angular 5 application. Your favorite IDE (For this, mine is VS Code).NodeJS, which can be installed from (Just go for stable version). ![]() This way we can later compose the mean stack app using the different images in a docker-compose.yml.īefore we start coding, we need to have some basic dependencies installed: We will now, one by one, setup the different parts of the application and Dockerize them, by creating a Docker image for each part using DOCKERFILEs. These eases the developer from a lot of the hassle with manually setting up environments and manage dependencies. With Docker it is easy to get an application running on different environments, because we can simply build our application as images and run these images as containers on machines with Docker installed. an image for the client application, one for server and one for database.īenefits of Docker over traditional approaches: Docker-compose: A file specifying how images should be build and run and runs on top of the “docker build” and “docker run” commands for setting up multiple containers on the same machine, eg.Docker-engine: The engine providing the Docker containerization technology.This file is read when running the “docker build” and “docker run” commands. DOCKERFILE: A file used for building docker images, specifying dependencies and configuration for the image and how the image should be run.Containers: Container are instantiated images that contain all dependencies, runtime as well as libraries, for running the application.Images: A read only specification of how a container should be created, that can be instantiated as a container.Because containers can share the host systems ressources, containers can be much smaller than VMs and startup in a fraction of the time. Running containers in Docker differ from VMs by being able to share the host system’s ressources, like networking and kernel, whereas VMs are isolated (with HyperV), containing everything inside its own guest OS. Docker overviewĭocker is used for running applications in containers making them contain everything needed for running the application: runtimes, system tools, libraries, OS and everything you would otherwise need to install yourself to run the application. It is based on a Github demo I created, which can be found here. This post is about creating a MEAN stack app consisting of Angular 5, MongoDB, NodeJS and Express, running in Docker. ![]()
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